If you read through the manual, both the owners and the service manual, Honda says it is. I hear what you are saying and agree it shouldn't if the seal is good but just know they indicate a drip or so is not abnormal.No it isn‘t designed to to THIS during a long standstill.
There is a possibility that there could get some oil OR water out of that weep hole, but only if the gasket is damaged, so that the oil and water don’t mix.